A227750 Number of nX5 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X6 binary array having determinant equal to one

24, 409, 6002, 90881, 1378923, 20935625, 317839952, 4824746883, 73241810146, 1111840502498, 16878162167610, 256217101254446, 3889475171157074, 59043746368678100, 896307041512584467, 13606289568286192979

Offset

1,1

Comments

Column 5 of A227751

Links

R. H. Hardin, Table of n, a(n) for n = 1..58

Example

Some solutions for n=4
..1..1..0..0..0....1..0..1..0..0....1..0..1..0..0....1..0..0..1..0
..0..0..0..0..0....1..1..0..0..0....0..0..0..0..1....0..0..0..1..0
..0..1..0..1..1....0..0..0..1..0....0..1..0..0..0....1..0..0..0..0
..1..0..0..0..1....1..0..0..1..0....1..0..0..0..1....0..0..0..0..0

Crossrefs

Sequence in context: A021304 A018092 A331931 * A221619 A267166 A016326

Adjacent sequences: A227747 A227748 A227749 * A227751 A227752 A227753

Keyword

nonn

Author

R. H. Hardin Jul 25 2013

Status

approved